Weathering time: walking with young children in a changing climate

ABSTRACT

Children growing up today face a multitude of climate-related challenges, requiring a capacity for creative and ethical modes of attending to both the known and unknown effects of a changing climate. In response to these challenges, I explore the potential in children’s weathering encounters, as observed during an ethnographic research project titled Walking with Wildlife in Wild Weather Times. In particular, I consider the various ways children engage with the weather and what this reveals about our (human) interconnections and minglings with the weather world. In this paper, I focus specifically on the temporal dimensions of child/weather encounters. My aim is to show that taking the time with children to slow down and attend to the elemental affects in the world, can reveal a weathered entanglement of past, present and future and a foundation for a curious and open attentiveness in responding to the climate challenges ahead.     

Multiple beam observations of mid-latitude ionospheric disturbances by the MU radar

The pulse-to-pulse beam steerability of the M U radar of Kyoto University enables us to observe multiple beam positions simultaneously. Based on 560 h of this type of data, we present two typical patterns of mid-latitude ionospheric disturbances and their horizontal traveling characteristics. Wavy structures have not been found in large-scale disturbances. Isolated disturbances travel primarily southward (equatorward) in disturbed conditions, while no preferred direction is observed in quiet conditions.     

旅游决策过程调查研究

旅游决策过程是一个从心理到行为的连续体,包括一系列相关的阶段或步骤。本研究在以往研究的基础上,通过访谈和问卷调查,最终发现个人的旅游决策过程可以划分为产生旅游的需要或动机、收集有关旅游的信息、确定旅游目的地或旅游线路、进行旅游预算、确定出游方式、决定是否外出旅游、外出旅游等七个阶段。每个阶段,旅游者需要解决不同的问题。     

Assessing the Use of Real-time DataStreme Weather Data in an Introductory Physical Geography Course

The online data from the American Meteorological Society's DataStreme course have been used successfully in a traditional undergraduate college weather and climate class. DataStreme was designed to train K-12 teachers to transform weather data into exciting learning experiences. Adaptation of these materials so that some of this excitement could be infused in a traditional college setting was the goal of this pedagogical experiment. These data and associated learning materials have been adapted specifically for use in undergraduate weather and climate courses and are now being made available by AMS as Online Weather Studies. This paper describes and assesses the use of online data. The assessment involved a comparison of student self-reports of factual knowledge mastery, skills acquisition and satisfaction with the methods used in two sections of the same course, one offered with the real-time weather data and one without.     

Determination of velocity vectors of thermospheric wind from dispersion relations of TID's observed by an HF Doppler array

A method of determining horizontal velocity vectors and temperature of thermospheric winds from azimuthally different ω-κ diagrams derived from the data of traveling ionospheric disturbances (TID's) observed by an HF Doppler array has been developed. In this method, an analogous property between the Brunt-Vaisala frequency in the atmospheric oscillations and the plasma frequency in the plasma oscillations is applied to the analysis of the observed data. A declination of the resonance branches of the Brunt-Vaisala frequency in the ω-κ diagrams due to a Lorentz transformation is used for the estimation of the velocity vector of the thermospheric wind. This method makes it possible to separate the velocity vector of the thermospheric wind and the propagating directions of the TID's from the azimuthally different ω-κ diagrams. Several results of the velocity vectors during the daytime data are consistent with the results obtained by incoherent scatter radars and theoretical results. Furthermore, a typical dispersion curve which agrees well with those of the acoustic gravity waves derived from the linear perturbation theory under the isothermal atmospheric condition has been also obtained.     

当前我国自助游监管"空心化"的成因、根源及对策分析

本文首先就国内自助游研究现状进行了文献综述,提出所要探讨的自助游监管和监管空心化问题;进而对自助游监管“空心化”的表现、成因和根源进行了探讨;在此基础上,文章提出了关于改善当前自助游监管“空心化”现象的建议,内容涵盖政府、行业协会、企业三个层面,以期促进自助游市场的健康和良性发展。     

Coherent-array HF Doppler sounding of traveling ionospheric disturbances: I. Basic technique

We present an introduction to the use of phase-coherent, multi-receiver HF Doppier sounding arrays for measuring the horizontal velocity of traveling ionospheric disturbances (TID's). The point of departure is the theorem of Pfister (1971, J. atmos. terr. Phys. 33, 999) relating ray Doppler to ray zenith angle for a monostatic full reflection sounder. Retaining the simple model of a specular, smooth ionospheric reflector which is deformed by a propagating undulation, we first generalize the theorem to bistatic sounding geometry and then include the effects of amplitude in addition to phase. Next, these results are cast into an algorithm for treating multi-receiver phase sounders containing many diverse baselines, in order to obtain an accurate and unambiguous solution in the plane of wave slowness (inverse of velocity). The point spread function of this solution is controlled by process bandwidth and by array geometry. We illustrate the coherent-array approach using data from an eight receiver array during passage of a TID.     

Ionospheric and atmospheric disturbances around Japan caused by the eruption of Mount Pinatubo on 15 June 1991

The disturbances observed by the Japanese ionospheric observation network following the explosions of Mount Pinatubo on 15 June 1991, are presented. Remarkable ionospheric fluctuations with periods of about 20 min appeared in the records of HF Doppler and total electron content (TEC) data. Traveling wave fronts of ionospheric disturbances scaled from these data give a northward horizontal velocity of 290 m/s. The surface pressure fluctuations due to the passage of atmospheric waves were confirmed by the microbarograph chain data in Japan. There existed three kinds of northward traveling pressure fluctuations; short-period (2–5 min) fluctuations with a horizontal velocity of 290 m/s, long-period (8–10 min) fluctuations with 300 m/s, and 17-min fluctuations with 281 m/s. It is concluded that the ionospheric and surface pressure waves were caused by the eruption of Mount Pinatubo.     

避暑旅游指数概念模型及评价指标体系构建

气候变暖背景下避暑旅游成为夏季旅游市场的主旋律。地方政府及旅游主管部门在培育避暑旅游目的地时应从何入,手旅游者如何能够准确地做出避暑旅游决策等是一个现实问题。本文在综述国内外相关研究与实践的基础上,认为舒适凉爽的夏季气候条件只是避暑旅游的最基本条件,创新性地提出应侧重从产业发展的角度,引入旅游休闲度、游客满意度和综合风险度等指标。避暑旅游评价指标体系的构建为目的地避暑旅游条件评估提供了理论框架,有助于游客准确地做出避暑旅游决策,同时也为目的地避暑旅游发展与提升提供一个具操作性的管理工具。     

Ethnic and Religious Violence in South China: The Hakka-Tiandihui Uprising of 1802

In 1802 the second major Tiandihui (Heaven and Earth Society) uprising erupted in the mountains of Huizhou prefecture near Canton.Before it was suppressed over a year later,the disturbances came to involve several tens of thousands of people and nearly a quarter of Guangdong province.This study,which is based on extant historical sources and fieldwork,takes an interdisciplinary approach,combining the methodologies of history,anthropology,and folklore.The areas where the uprising occurred were predominantly Hakka,an ethnic Chinese minority who came into conflict with the earlier settlers,known as the Punti.As violence escalated,both sides organized their own paramilitary units:Hakka formed Tiandihui groups and Punti formed Ox Head Societies.Significantly too,the Tiandihui groups in Huizhou belonged to a much wider network of secret society and sectarian organizations that spread across the Hakka heartland on the Jiangxi,Fujian,and Guangdong border.This article addresses key issues concerning the social,political,and religious contexts and motivations of this Hakka-led uprising.     

Model calculation and analysis of magnetosphere-ionosphere-thermosphere coupling

Model calculations are used to analyse the function of the magnetosphere-ionosphere electrodynamic coupling and that of the ionospheric tide-dynamo. The phenomena concerned are discussed.It is shown that for geomagnetic and ionospheric research in low-latitude and equatorial regions, the penetration and shielding of magnetospheric disturbances should be taken into account. On the other hand, the effect of the tidal dynamo on the ionosphere of the auroral region should not be ignored, especially on geomagnetically disturbed days when the conductivity is very high. The features and the relative importance of these two effects are different at different stages of a magnetic storm, and depend on latitude. There is an evident dawn-dusk asymmetry in these effects. The influence of weak geomagnetic disturbances on the low-latitude ionosphere should also be taken into account.     

The demographic transition then and now: processes, perspectives, and analyses

Fifty years have passed since the post-World War II development of demography as an academic field. During this time, one of the central focuses of research has been the study of demographic and fertility transitions. The authors review a selection of research developments and analytic issues that have appeared in the literature. After presenting, in roughly chronological order, the general development of this research work, they raise questions concerning theory and methodology. In doing so, they argue that some research directions have been overemphasized to the neglect of others.     

‘To Prostitute the Elements’: Weather Control and Weaponisation by US Department of Defense

The US military has a long and robust history of scientific research programs, often conducted in conjunction with civilian scientists at non-military governmental agencies as well as universities. These programs flourished in the immediate post-Second World War and the early cold war years, as the field of military science expanded to address the sprawling Soviet threat. One area of growth was in atmospheric science, which had already taken off preceding Second World War in conjunction with the growth of air warfare. Advances in meteorology, cloud science and climatology enabled military interests to align with weather forecasters and also agricultural interests, as old ideas about cloud seeding and weather control were revived in the light of new research. The military, largely through the Air Force, advanced a series of projects investigating the potential of weather and climate control, manipulation, and ultimately weaponisation. These programs, which were sometimes linked to US Department of Agriculture programs aimed at improving agricultural production, persisted for decades. Some of the newly developed tools were deployed: local climate manipulation efforts during the Vietnam conflict were aimed at impeding traffic along the Ho Chi Minh Trail, with mixed results. Significant efforts came during the Weather Bureau leadership of Francis W. Reichelderfer, whose papers contain a wealth of information about efforts ranging from cloud seeding to proposals to drop atomic weapons on hurricanes. These papers, along with those of Weather Bureau scientist Harry Wexler, provide a fascinating window to a time when the US military and scientific establishment seemed poised to grasp the levers of power over nature itself. This paper describes these little-studied programs, and situates these efforts within the broader military science programs accompanying the emergence of air warfare, as well as post-war science programs aimed at countering the Soviet challenge.     

Tutoring Relevant Geography: A People's Geography Project initiative

UK geography departments are now reaching the stage where, in light of social change and growing competition for students, the need to offer a degree programme that is relevant to the needs and expectations of students is a real urgency. Drawing on the People's Geography Project, an initiative from the USA, this paper details the experiences of the author in teaching relevant geography in first-year undergraduate tutorials. The paper contends that by providing an opportunity for students to engage in contentious debate and to adopt a political position, students are encouraged to approach issues from a critical geographical perspective, demonstrate the relevance of a geographical perspective in contemporary issues, recognise the conflicting interests from competing discourses and reach a possible, just solution to social problems. This paper reports on the choice of topics, the forum of debate and assessment through alternative coursework styles, and it analyses the learning of both geographical and transferable skills through a People's Geography tutorial programme. The degree of relevance perceived by both the students and the tutor is evaluated, and suggestions are made for further development of a People's Geography approach.     

Literary quests in the Aegean (1840–1940): Identity and cosmopolitanism

Literature is produced within society and reflects social phenomena and therefore it must not be neglected in any interscientific approach to the way a certain geographical area contributes to the construction of an identity. The main purpose of this paper is to point to some directions concerning the study of the Mediterranean, by means of literary works. It is based on the example of Greece and presents a brief discussion through the history and certain themes of Greek literature (movement, traveling, experience of the refugees etc.), concentrating on the search for a national identity, towards either an introspective or a cosmopolitan point of view. The study is not exhaustive; it is indicative of the way literature, both from a contemporary and a general historical point of view, is able to express a more indepth research into the Mediterranean communities.     

HF Doppler observations of medium-scale travelling ionospheric disturbances at mid-latitudes

From 1972 to 1975 F-region medium-scale travelling ionospheric disturbances (MSTIDs) were observed at Leicester, U.K. (52°32′N 1°8′W) by means of the HF Doppler technique. Most of the features of the disturbances previously reported in the literature are confirmed, with the exception of the apparent seasonal variation in the propagation direction. The measured wave azimuth rotates clockwise through 360° in 24 h, supporting theoretical predictions concerning the filtering effect of the neutral wind in the northern hemisphere. The most commonly observed direction of wave propagation, however, is displaced from the antiwind direction and is located at an azimuth of 130–140° relative to the wind. A periodic variation of the direction of wave propagation with respect to the anti-wind direction is evident, which may indicate that lower atmospheric winds can have a greater influence on waves at thermospheric heights than previously supposed.A synoptic survey of the data set reveals little correlation between wave occurrence and auroral processes, and it is unlikely that high-latitude sources are responsible for many of the MSTIDs observed at mid-latitudes.     

游客出游意愿影响因素研究——基于突发公共卫生事件的实证

本文在目标导向行为模型的基础上,构建了游客在面对突发公共卫生事件时各种影响因素对出游意愿影响的理论模型,为系统性的进行影响游客出游意愿的因素研究奠定了基础。在对经历过突发公共卫生事件后有出游经历的游客进行实证研究后,发现出游态度、感知行为控制和积极的预期情感对出游欲望有显著的正向影响;消极的预期情感对出游欲望有显著的负向影响;出游欲望对出游意愿有显著的正向影响。     

国外古代失蜡铸造工艺研究综述

本文根据国外有关失蜡工艺研究的文献,着重介绍了西方有关古代失蜡铸造的遗物（蜡模和外范）的出土与发现,以及有关失蜡工艺的起源和西方早期失蜡铸造的方法。     

论邓小平的"三农"思想对中国农村改革的重大意义

邓小平高度重视农业发展、农村改革和农民生活,"三农"思想非常丰富。主要有: 农业是国民经济的基础;农村改革的首要任务是解放和发展生产力;农村改革的核心是充分调动农 民的积极性;农业发展的根本出路在于科技进步;农村改革和农业发展要有"两个飞跃",等等。 这些思想对中国农村改革具有重大的积极意义。